silk flyleaves

The free flyleaves and board paper of an endpaper
assembly made of silk. While very attractive, the
use of silk for flyleaves causes problems because
it tends to fray at the edges and must, therefore,
be turned in. Since this can only be done after
the book is trimmed, they must be attached as one
of the last operations. This problem can largely
be overcome. however, by the use of JAPANESE SILK , which
has less tendency than ordinary silk to fray. Silk
flyleaves are frequently used in conjunction with
leather joints. See also: DOUBLURE (1) ;DRUMMING ON .